To eliminate a large-scaled work execution for an installation of portable type regenerative device due to its portable characteristic and further enable the device to be installed at any location by a method wherein a main body of the device having a regenerative member capable of storing heat or radiating heat through heat exchanging operation with a contact object is installed while being inclined against a mounting surface.

There is provided a main body 3 of a device in which a heat storage member 2 capable of storing heat or radiating heat through a heat exchanging with a contact object R is stored in such a way that heat collected at a heat collecting section 1 may be transferred. In turn, as a mounting section 4 for use in mounting the main body 3 of the device while being inclined against the mounting surface. During a heat storing operation, a fluid driving means 6 is driven with a solar cell 7, thereby heat is transferred from a heat collecting surface 1 having solar heat collected therein to air in a passage space 5a, thereafter the air is contacted with the heat storage member 2 to perform a heat exchanging operation. In turn, during a heat radiating operation, air of low temperature is sucked from a building through a heat radiating air introducing pipe 12, contacted with the heat storage member 2 to perform a heat exchanging operation. Accordingly, due to a portable type device, a large-scaled work is not needed for its installation.